Apparatus for trapping solid particles in suspension in gas-currents.



T. E. M URBAY. APPARATUS FOR TRAPPING SOLID PARTICLES IN SUSPENSION IN GAS GURRENTS.

L flfi n Patented Mar. 17, 1914;

APPLIGATION FILED .TUNEQ THOMAS E. MURRAY,

APPARATUS roa TRAPPING SOLID'PARTI Specification of Letters Patent.

OF NEW YORK, N. Y.

CLES In'sUsPENsIoN IN ess-cummnrs.

Patented Mar. 17, 1914..

Application filed June 9, 1913. Serial No. 772,527.

To all whom it may concern:

Be it known that I, THOMAS E. MURRAY, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Apparatus for Trapping Solid Particles in Suspension in GasCurrents, of which the following is a specification.

The invention relates to apparatus for trapping solid particles in suspension in gas currents. The construction is'such that the particles after traversing a duct strike a plate disposed in front of the duct outlet, and at the moment of impact and consequent loss of energy, are washed from said plate intov a suitable receptacle below. The duct is preferably vertical, and traversed by water streams which inclose the gas current, so that the particles after striking the plate are prevented from rebounding or being carried therefrom by the gas current by the encompassing screen of water formed by said streams.

In the accompanying drawingsl. igure 1 is a vertical section of my device, shown connected to the delivery flue of a steam boiler. Fig. 2 is a section on the line :0, a: of Fig. 1. Fig. 3 is a top view of the top wall of easing 1. Similar numbers of reference indicate lilfc" parts. 1 is a vertical casing having its lower portion downwardly tapering to form a water tank 2, at the bottom of which is an outlet pipe 3, in which is a valve 4. An inlet duct 5 leads from the boiler 6, and conveys the gas current in which the solid particles are entrained into the duct 7 within casing 1 and depending from the top wall 8 of said casing. WVithin duct 7 is a tube 9, through which passes the suspension cord v1O of a plate 11 which is disposed below the outlet opening of duct 7. Said plate preferably as a conical projection 12 which extends upwardly into duct 7. Cord 10 passes over suitable guide-pulleys, and may be operated by the drum 13 to raise or IOWerplate 11, so as to vary the distance of said plate froin the outlet of duct 7. The top wall 8 is disposed somewhat below the upper edge of easing 1, so as to form a receptacle 14 for Water received from a pipe 15 leading from any suitable source of supply. In said top Wall and communicating with duct 7 is a circular row of openings'16. Similar ope-nings 17 are made in said wall, communicatng with tube 9. On the exterior of duct 7 and immediately below inlet duct is a pan 18, communicating with duct 7 by perforations 19 in the wall of said duct. ater is delivered into said by a pipe 20, and th'cncc passes by perforationsi-ltl into duct 7. An outlet duct 21 leading to the stack or chimney communicates with the upper portion of casing 1. In operation, water from receptacle 14 passes through th'e perforatious 16 in top wall 8 into duct 7 and descends preferably along the inner. periphery thereof. The portion of said periphery which otherwise would be shielded by the inlet duct 5, receives streams from the perforations 19 communicating with pan 18.

The gas current entraining the solid particles to be trapped enters duct 7 through .duct 5, and desceudsin the space within said duct which is surrounded by the water streams. On escaping from the outlet, said particles strike the surface of the plate 11, thus losing energy. At the same time the descending water streams also strike the plate, and operate to engage the particles thereon and to wash the same over the edge of the plate through the. clearance ,22 betpgeli said edge and easing 1, and so into the tank. The descending streams form practically a tubular shell of .watcr surrounding the descending particles. Said tubular shell, while it permits passage ofthe gas current between the surface of plate 11 and the lower outlet end of duct 7, remove: from said current practically all the particles which have not been engaged by the water on plate 11 and washed from said plate, as already described.

In orderstill further to insure the trapping eflicieney of the apparatus, the plate 11 pan from receptacle 1% i is provided with the conical projection 12..

which extends upwardly into duct 7. The .water streams which enter tube 9 through perforations 17 encounter this projection and flow down the same to plate 11.. The particles on the plate are thus aetedupon by the stream from tube 9 as well as. by the stream descending the walls of duct 7;

I claim:

1. An apparatus for trapping solid particles in suspension in a gas current. comprising a duct for said current, a plate disposed in front of the outlet of said duct and receiving the impact of said particles, means for delivering war face of said plate, and means for-rarying the distance between said plate and sai duct. 3 I 1 2. An apparatus for trapping solid particles in suspension in a gas current, comprising: a vertical duct for said current, a series oi? circularly disposed water inlets above said duetand delivering into the same substantially a tubular shell. of water inclosing said current and aplate below the outlet of said duct and at'adistanee therefronr and receiving the impact of said water and said particles escaping from said duct.

3. An appaiatus for trapping solid particles in suspension in a gas current, eoinprising a vertical duct {or said 'mirrent, means for delivering into said duct aplurality of water streams inelosing' said current, a plate below said duct, and a conical projection on. said plate entering; said duet; the said plate and projection receiving the impact o'tisaid water and said particles.

4:. An. apparatus for trapping solid palticles in suspension in av gas current, comprising a casing having an outlet for said current, a vertical. duet in said easing, a inlet duct coInnninieat-ing with said vertical duet, means for delivering water into said vertical duet, a plate disposed below the outlet of said duct and at a distance therefrom and receiving the impact of said vatr and upon the impact sursaid particles, and nieans for raising. and lowering said plate; there being a clearance between said casing and said plate.

5. An apparatus for trapping solid partieles in suspension in a gas current, co1n prising a vertical duet for said current, a plate a, conical pro ect'on on said plate entering 40 saidduct, two concentric series of circularly disposed Water inlets above said duct; one of ,'d series delivering substantially t tubular shell of water into said duct. and

upon said projection and the other of said 4 series delivering- 'sul'istant'ially' a tubular shell of water into said duct and upon the face. of said plate outside of said PTO'jQCtlOIl.

C. An apparatus {or trapping solid par-'.

tieles in suspension in a gas current, comprising a vertical duct for said current, a plate disposed below the outlet oi said duct, a conical pro eetion on said plate entering said duct; and a serie" of eireularlv disposed:

water inlets ahore said duet deiivering sub- 5 stfllltlttll) a tubular shell of water into said duet and upon said projection.

In testimony whereof T. have atiixed my signature in'presence of two W tnesses.

TEIOA'ZAS E. MURRAY.

\Vitnesses; i

(ina'ruvon T. PORTER, Mn 'l. llloGAnnYJ disposed below the outlet of said duet, 5 

